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Hex nuts steel grade 8 zinc yellow 50 pack

MIDWEST FASTENER CORP

MIDWEST FASTENER CORP 03717 Hex Nut 3/8"-16 Steel Grade 8 Zinc Yellow 50 PK

SKU CH-H45J-E380W

Secures 3/8"-16 bolts with Grade 8 steel strength in a 50-piece zinc-yellow pack

  • Product typeNuts
  • Grade 8 steel handles high-stress fastening
  • Zinc yellow finish resists corrosion in harsh environments
  • 3/8"-16 thread fits standard coarse bolts
  • 50-piece pack covers multiple project needs
  • Hex shape allows secure tightening with standard wrenches

Threaded Fastener Security

This pack supplies fifty Grade 8 hex nuts built for securing machine screws and bolts in demanding assemblies. The yellow zinc coating adds corrosion resistance for automotive and industrial environments. Each nut conforms to a 3/8"-16 thread pattern for standard coarse-pitch hardware.

Grade 8 Strength Envelope

The heat-treated steel core handles high clamping loads that would strip or stretch lower-grade fasteners. Fifty pieces provide enough quantity for multiple repair jobs or a single large project without reordering. The supply runs out when the joint count exceeds the pack quantity or when fine-thread compatibility is required.

Coarse Thread Interface Limits

The unified coarse 16 threads per inch profile resists cross-threading and speeds assembly compared with finer pitches. It will not engage fine-thread bolts or metric hardware, so mixed inventories need separate bins. Yellow zinc protects the surface but is not a substitute for stainless steel in continuous salt-spray exposure.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 70% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameMIDWEST FASTENER
Product typeNuts

Questions about this item

Will these 3/8"-16 Grade 8 hex nuts thread correctly onto the existing 3/8"-16 bolts I already have?

Yes, the 3/8"-16 thread pitch matches standard 3/8"-16 bolts so they will thread on properly.

How can I confirm the Grade 8 strength rating once the nuts are installed?

Grade 8 nuts carry six radial lines on the top face; check for those markings after installation to verify the rating.

Does the 50-piece pack include matching washers or lock washers, or must I buy them separately?

The pack contains only the 50 hex nuts; any flat washers, lock washers or other hardware must be purchased separately.

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